Question 15

A notice is attached to the flat surface of the laboratory wall. Where is it?

It is at the wall.
It is in the wall.
It is behind the wall.
It is on the wall.Correct answer

Explanation

The notice is on the wall because it touches and is supported by that surface. In the wall would imply that it is embedded inside the structure, which the premise excludes.

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Question 15: A notice is attached to the flat surface of the laboratory… · English Prepositions · Questena